CN111790777A

CN111790777A - Roundness correction device for circular ring type deformation part

Info

Publication number: CN111790777A
Application number: CN202010667990.XA
Authority: CN
Inventors: 董积伟; 刘恒勇; 万联国; 王怡忻; 王明营
Original assignee: Qingdao Xinkang Engine Parts Co ltd
Current assignee: Qingdao Xinkang Engine Parts Co ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2020-10-20
Anticipated expiration: 2040-07-13
Also published as: CN111790777B

Abstract

The invention relates to the technical field of roundness shaping tools, in particular to a roundness correction device for a circular ring type deformation part, which comprises a shaping frame, and a movable assembly and a fixed assembly which are arranged on the shaping frame, wherein the movable assembly comprises an air cylinder, a linkage plate, a connecting screw rod, a shaping chuck and an arc-shaped plate which are sequentially arranged from top to bottom; the fixed assembly is arranged below the movable assembly and comprises a shaping disc seat, positioning bearings and a clamping seat, the shaping disc seat is fixedly arranged on the shaping frame, the number of the positioning bearings is 2, the positioning bearings are arranged below the arc-shaped plate in parallel, and a length measuring instrument is arranged in the clamping seat. The invention simulates the operation mode of manual knocking and beating, carries out local roundness correction on the irregular part of the workpiece, and is more suitable for rounding the irregular elliptical workpiece; the original operation mode of completely adopting manual correction is replaced, the roundness quality after correction is high, and the operation time and the operation difficulty are reduced.

Description

Roundness correction device for circular ring type deformation part

Technical Field

The invention relates to the technical field of roundness shaping tools, in particular to a roundness correction device for a ring-type deformed part.

Background

Due to the reasons of machining errors, material characteristics and the like, a circular ring product is easy to deform after being machined, so that the assembly and use requirements cannot be met, and the roundness of a workpiece is corrected by the following two methods: 1. the workpiece is corrected by manual knocking, beating and other modes, so that the working efficiency is low and the appearance of the workpiece is influenced; 2. the tool press is adopted for correction, but the magnitude of interference generated when the press is used for correction needs to be reserved for a workpiece, and the size requirement cannot be directly met.

Disclosure of Invention

The invention aims to solve the problems and provides a roundness correction device for a ring-type deformation part, which adopts the following technical scheme:

a roundness correction device for a ring-type deformation part comprises a shaping frame, and a movable assembly and a fixed assembly which are arranged on the shaping frame, wherein the movable assembly comprises an air cylinder, a linkage plate, a connecting screw rod, a shaping chuck and an arc-shaped plate which are sequentially arranged from top to bottom; the fixed assembly is arranged below the movable assembly and comprises a shaping disc seat, positioning bearings and a clamping seat, the shaping disc seat is fixedly arranged on the shaping frame, the number of the positioning bearings is 2, the positioning bearings are arranged below the arc-shaped plate in parallel, and a length measuring instrument is arranged in the clamping seat.

Preferably, the number of the cylinders is 2, the cylinders are arranged in parallel, the linkage plate is in an inverted triangle shape, a pneumatic connector is arranged between the tail end of a piston rod of each cylinder and the linkage plate, a linkage plate connector is arranged between the linkage plate and the connecting screw rod, the pneumatic connector and the linkage plate connector are respectively hinged with the linkage plate, and the linkage plate connector is rotatably connected with the connecting screw rod.

Preferably, a guide rail is fixedly arranged on the shaping frame along the vertical direction, a sliding block is arranged on the guide rail in a sliding manner, and the sliding block is fixedly connected with the shaping chuck.

Preferably, the positioning bearing is detachably connected to the reshaping disk seat through an insert.

Preferably, the locating bearing is a wood bearing.

Preferably, auxiliary bearings are uniformly distributed on the shaping disk seat along the circumferential direction.

On the basis of the scheme, the number of the auxiliary bearings is three, and each group comprises a plurality of rolling bearings arranged side by side along the radial direction.

Preferably, the clamping seat is arranged in an installation groove, the installation groove is arranged below the shaping disc seat, a plurality of groups of positioning holes are radially arranged in the installation groove, and the clamping seat is detachably connected with the positioning holes.

Preferably, the length measuring instrument is a dial indicator or a dial indicator.

Preferably, the radius of the inner arc surface of the arc plate is larger than the radius of the workpiece to be processed.

The invention has the beneficial effects that:

1. the operation mode of manual knocking and beating is simulated, local roundness correction is carried out on irregular parts of the workpiece, and the method is more suitable for rounding irregular oval workpieces;

2. accurate centering can be realized in the correction process, the correction position and the correction direction of the tool are ensured, and the correction quality of the workpiece is improved;

3. the size and the position of parts in the workpiece can be adjusted by adopting a detachable connection mode, so that the application range of the invention is expanded;

4. the original operation mode of completely adopting manual correction is replaced, the roundness quality after correction is high, and the operation time and the operation difficulty are reduced.

Drawings

FIG. 1: the invention has a schematic structure;

FIG. 2: the structure of the invention is a front view;

FIG. 3: the invention is a side cross-sectional view.

Detailed Description

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

in the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 3, a roundness correction device for a ring-type deformation member comprises a shaping frame 1, and a movable assembly and a fixed assembly which are arranged on the shaping frame, wherein the movable assembly comprises an air cylinder 21, a linkage plate 24, a connecting screw rod 26, a shaping chuck 27 and an arc-shaped plate 28 which are sequentially arranged from top to bottom, and a through hole is formed in the middle of the shaping chuck 27 to reduce the installation difficulty of the connecting screw rod 26. The linkage plate 24 is driven by a piston rod of the cylinder 21, and the shaping chuck 27 is detachably connected with the arc-shaped plate 28. Preferably, the number of the cylinders 21 is 2, the cylinders are arranged in parallel, the linkage plate 24 is in an inverted triangle shape, pneumatic joints 23 are arranged between the tail ends of the piston rods of the cylinders 21 and the linkage plate 24, the pneumatic joints 23 are symmetrically arranged at the left end and the right end of the upper portion of the linkage plate 24, preferably, the linkage plate 24 is an isosceles triangle flat plate, linkage plate joints 25 are arranged between the linkage plate 24 and connecting screws 26, the pneumatic joints 23 and the linkage plate joints 25 are respectively hinged to the linkage plate 24, and the linkage plate joints 25 are rotatably connected to the connecting screws 26. By the mode, the problem that the action direction is inaccurate due to installation errors and the like when a single air cylinder 21 works is avoided; by adopting the mode that the two cylinders 21 are hinged with the linkage plate 24, when the two cylinders 21 do not synchronously move and the output pressure is unbalanced due to installation errors or other reasons, the rotatable linkage plate 24 is used for adjusting to ensure that vertical downward acting force is transmitted to the connecting screw rod 26, so that the shaping chuck 27 drives the arc-shaped plate 28 to move along the vertical direction. In order to further ensure the accuracy of the movement direction of the shaping chuck 27, a guide rail 32 is fixedly arranged on the shaping frame 1 along the vertical direction, a sliding block 31 is slidably arranged on the guide rail 32, and the sliding block 31 is fixedly connected with the shaping chuck 27, so that the shaping chuck 27 is ensured to move along the linear track of the guide rail 32.

The fixed assembly is arranged below the movable assembly and comprises a shaping disk seat 42, a positioning bearing 44 and a clamping seat 46, wherein the shaping disk seat 42 is fixedly arranged on the shaping frame 1 through two bilaterally symmetrical gibs 41, and preferably, the shaping frame 1 is a circular flat plate. The arc-shaped plate 28 is arranged at the upper part of the shaping disc seat 42, and the radius of the inner arc surface of the arc-shaped plate 28 is larger than that of a workpiece to be processed, so that the workpiece is plastically deformed along with the shape of the arc-shaped plate 28.

The number of the positioning bearings 44 is 2, and the positioning bearings are arranged below the arc-shaped plate 28 in parallel and used for supporting and positioning an inner ring of a workpiece to be corrected. Preferably, in order to avoid damage such as scratching and bumping of the inner ring of the workpiece caused by the traditional metal bearing during the straightening operation, the positioning bearing 44 is a wood bearing with bakelite, so that the surface of the workpiece is protected while the bearing strength is ensured. Preferably, the positioning bearing 44 is detachably connected to the truing disk seat 42 through the insert 43. The distance between the positioning bearings 44 is adjustable by adopting different distances according to different workpiece wall thicknesses, and the distances between the positioning bearings 44 on different inserts 43 are different, namely, the positioning bearings 44 with different distances are utilized by installing different inserts 43. Too large a distance reduces the bearing strength of the positioning bearing 44 to the workpiece, and too small a distance increases the pressure required for deformation of the workpiece, which increases the processing difficulty. The inside of the clamping seat 26 is provided with a length measuring instrument, and a dial indicator or a dial indicator can be selected. The clamping seat 46 is arranged in the mounting groove 47, the mounting groove 47 is arranged below the shaping disc seat 42, a plurality of groups of positioning holes 48 are arranged in the mounting groove 47 in the radial direction, and the clamping seat 46 is detachably connected with the positioning holes 48, so that the mounting position of the length measuring instrument can be adjusted according to the diameter of a workpiece to be corrected.

During correction, a workpiece to be shaped is placed on the shaping disc seat 42, the inner hole of the workpiece is positioned by the positioning bearing 44, the measuring end of the dial indicator or the dial indicator is abutted against the workpiece, the workpiece is rotated for a circle, the maximum radius point of the workpiece is measured and marked, the workpiece is rotated, the marked point is rotated to be right below the arc-shaped block 28, the air cylinder 21 is driven to drive the arc-shaped block 28 to move downwards and extrude the workpiece, the long axis of the workpiece is shortened, the short axis of the workpiece is extended, and the operation steps are repeated until the roundness size of the workpiece is qualified.

Preferably, in order to facilitate the rotation of the workpiece on the shaping disk seat 42, the shaping disk seat 42 is uniformly distributed with auxiliary bearings 45 along the circumferential direction, the number of the auxiliary bearings 45 is three, and each group comprises a plurality of rolling bearings arranged side by side along the radial direction. The outer surface of the auxiliary bearing 45 is about 2mm higher than the upper surface of the shaping disk seat 42, so that the resistance of the workpiece in rotation is reduced. A gap of 1mm is reserved between the rear surface of the arc-shaped plate 28 and the front surface of the shaping disc seat 42, when the gap is too small, the arc-shaped plate 28 can generate friction with the shaping disc seat 42 during reciprocating movement, and when the gap is too large, the arc-shaped plate 28 can not completely cover the outer surface of a workpiece, so that the processing quality is reduced.

The present invention has been described above by way of example, but the present invention is not limited to the above-described specific embodiments, and any modification or variation made based on the present invention is within the scope of the present invention as claimed.

Claims

1. A roundness correction device for a ring-type deformation part is characterized by comprising a shaping frame (1), a movable assembly and a fixed assembly, wherein the movable assembly and the fixed assembly are arranged on the shaping frame, the movable assembly comprises an air cylinder (21), a linkage plate (24), a connecting screw rod (26), a shaping chuck (27) and an arc-shaped plate (28) which are sequentially arranged from top to bottom, the linkage plate (24) is driven by a piston rod of the air cylinder (21), and the shaping chuck (27) is detachably connected with the arc-shaped plate (28); the fixed assembly is arranged below the movable assembly and comprises a shaping disc seat (42) and positioning bearings (44) and a clamping seat (46) which are arranged on the shaping disc seat, the shaping disc seat (42) is fixedly arranged on the shaping frame (1), the number of the positioning bearings (44) is 2, the positioning bearings are arranged below the arc-shaped plate (28) in parallel, and a length measuring instrument is arranged in the clamping seat (26).

2. The roundness correction device for the circular ring-type deformation pieces according to claim 1, wherein the number of the cylinders (21) is 2, the cylinders are arranged in parallel, the linkage plate (24) is in an inverted triangle shape, a pneumatic joint (23) is arranged between the end of a piston rod of each cylinder (21) and the linkage plate (24), a linkage plate joint (25) is arranged between the linkage plate (24) and the connecting screw rod (26), the pneumatic joint (23) and the linkage plate joint (25) are respectively hinged to the linkage plate (24), and the linkage plate joint (25) is rotatably connected to the connecting screw rod (26).

3. The roundness correction device for the circular deformation piece according to claim 1, characterized in that the shaping frame (1) is fixedly provided with a guide rail (32) along the vertical direction, the guide rail (32) is provided with a slide block (31) in a sliding manner, and the slide block (31) is fixedly connected with the shaping chuck (27).

4. A roundness correction device for a circular ring-shaped deformed member according to claim 1, wherein said positioning bearing (44) is detachably attached to the shaping disc holder (42) by an insert (43).

5. The roundness correction device for a circular ring-shaped deformed member according to claim 1, wherein the positioning bearing (44) is a wood bearing.

6. The roundness correction device for circular ring-shaped deformation members according to claim 1, wherein auxiliary bearings (45) are circumferentially and uniformly distributed on the shaping disc seat (42).

7. A device for roundness correction of a circular ring-shaped deformed member according to claim 6, wherein the number of said auxiliary bearings (45) is three groups, each group comprising a plurality of rolling bearings arranged side by side in a radial direction.

8. The roundness correction device for the annular deformation member according to claim 1, wherein the clamping seat (46) is disposed in an installation groove (47), the installation groove (47) is disposed below the shaping disc seat (42), a plurality of sets of positioning holes (48) are radially disposed in the installation groove (47), and the clamping seat (46) is detachably connected with the positioning holes (48).

9. The roundness correction device for the circular deformation piece according to claim 1, wherein the length measuring instrument is a dial indicator or a micrometer indicator.

10. The roundness correction device for circular ring-shaped deformation members according to claim 1, wherein the radius of the inner arc surface of the arc-shaped plate (28) is larger than the radius of the workpiece to be processed.